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PowerVR Fun Thread

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Reply 820 of 827, by Chadti99

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Limpem wrote on 2021-06-28, 12:16:
Thanks! :D Tomb Raider doesn't have a built-in benchmark, but you can display the current fps (I think with F3 but it might be F […]
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Thanks! 😁
Tomb Raider doesn't have a built-in benchmark, but you can display the current fps (I think with F3 but it might be F4 or F2 on the keyboard).
There is a frame-limit of 30FPS, but especially in larger area's the framerate drops to 20'ish on my system at 1024x768.
It's possible to improve performance with single-buffering (I think F9) which makes it better, but I am very curious if the higher clocks would solve this as well 😁

On what CPU and clock speed?

Reply 821 of 827, by mwdmeyer

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Limpem wrote on 2021-06-28, 12:16:
Thanks! :D Tomb Raider doesn't have a built-in benchmark, but you can display the current fps (I think with F3 but it might be F […]
Show full quote

Thanks! 😁
Tomb Raider doesn't have a built-in benchmark, but you can display the current fps (I think with F3 but it might be F4 or F2 on the keyboard).
There is a frame-limit of 30FPS, but especially in larger area's the framerate drops to 20'ish on my system at 1024x768.
It's possible to improve performance with single-buffering (I think F9) which makes it better, but I am very curious if the higher clocks would solve this as well 😁

From testing it looks like ~20fps is about the limit on outdoor areas at 80MHz in 1024x768. Single buffer takes it up to 27-29 or so.

1024 is still a bit much for this card. Testing with Tomb Raider Demo on P3 1GHz.

When testing Quake 2/HL1 you only get ~2fps+ increase at 80MHz. About a 10-12% increase or so.

So IMHO it isn't worth moding an existing PCX2 card, they are rare and I would only do it if you are really keen. I will run mine at 80MHz though, because at least in Quake 2 it is enough of a difference, although Quake 2 you can use other cards that are better suited.

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Reply 822 of 827, by Limpem

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mwdmeyer wrote on 2021-07-05, 11:52:
From testing it looks like ~20fps is about the limit on outdoor areas at 80MHz in 1024x768. Single buffer takes it up to 27-29 o […]
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Limpem wrote on 2021-06-28, 12:16:
Thanks! :D Tomb Raider doesn't have a built-in benchmark, but you can display the current fps (I think with F3 but it might be F […]
Show full quote

Thanks! 😁
Tomb Raider doesn't have a built-in benchmark, but you can display the current fps (I think with F3 but it might be F4 or F2 on the keyboard).
There is a frame-limit of 30FPS, but especially in larger area's the framerate drops to 20'ish on my system at 1024x768.
It's possible to improve performance with single-buffering (I think F9) which makes it better, but I am very curious if the higher clocks would solve this as well 😁

From testing it looks like ~20fps is about the limit on outdoor areas at 80MHz in 1024x768. Single buffer takes it up to 27-29 or so.

1024 is still a bit much for this card. Testing with Tomb Raider Demo on P3 1GHz.

When testing Quake 2/HL1 you only get ~2fps+ increase at 80MHz. About a 10-12% increase or so.

So IMHO it isn't worth moding an existing PCX2 card, they are rare and I would only do it if you are really keen. I will run mine at 80MHz though, because at least in Quake 2 it is enough of a difference, although Quake 2 you can use other cards that are better suited.

Thanks a lot for testing this!
I run my powervr with a 850 Mhz Tualatin (1133S @ 100Mhz FSB) and it seems performance for Tomb Raider is quite similar to my system with a 66 Mhz PCX2.
Won't be modding the card then, would hate to break the card in the process 😀

Reply 823 of 827, by anthony

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Pcx2 suffering from the 33mhz bus speed, especially when it overclocked. I recommend to raise bus clock to 40 or even to 44mhz if your mobo allows. And, once again, it hates chipsets above bx.

Reference point: q2 640x480 all default, map demo.dm2 should give 26.7fps @ 80mhz, 44mhz pci. Or even slightly more.

As i remember at default clocks Pcx2 gives about 21.6 fps in that benchamark

Reply 824 of 827, by mwdmeyer

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Thanks Anthony for quake2 results I have:

640x480 16bit
24.2 fps 80MHz
21.5 fps 66MHz

I'm currently running i815 chipset, no overclocks.

So that is good but also very good to know about pci speed etc. I will try this in future.

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Reply 825 of 827, by Warlord

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Not worth frying a pcx2 to get marginally better fps in games that don't run well on them to begin with my 2 cents stick with playing mw2 re1 and whatever games have superior ports which are the only relevant reasons to play with the cards pushing the cards way past their limits to not even achieve what's considered playable frame rate is a waste

Reply 826 of 827, by sirotkaslo

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Ordered a new heatsink, but ordered 55mm instead of 53, luckily fan was just the right size.

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Reply 827 of 827, by leileilol

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Let's look closely at some PVR2 texels

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  • pvr2-4.png
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  • pvr2-3.png
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  • pvr2-2.png
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  • pvr2-1.png
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